BIVALVIA. 219 
The habits of the living species are generally littoral; and they bury themselves 
in the sand, leaving their siphons on a level with the surface. 
1. Donax vittatus, Da Costa. Tab. XXII, fig. 7, a, 6. 
DoNAX TRUNCULUS. 
— VITTATUS. 
— ANATINUS. 
— RUBER. 
CUNEUS VITTATUS. 
Linn. Syst. Nat., ed. 12, p. 1127, fide Forb. and Hanl. 
Penn. Brit. Zool., ed. 4, vol. iv, p. 93, pl. 55, fig. 45. 
Lovén. Ind. Moll. Seand., p. 42, 1846. 
Gray. List Brit. Moll., p. 46, 1851. 
Forb. and Hanl. Hist. Brit. Moll., vol. i, p. 332, pl. 21, figs. 4—6, 
and pl. kK, fig. 7, 1848. 
Turt. Brit. Biv., p. 127, pl. 10, fig. 14, 1822. 
Da Costa. Brit. Conch., p, 207, t. 14, fig. 3, 1778. 
Spec. Char. Testa transversd, oblonga vel cuneiformi, inequilaterali ; postice breviore, 
truncata, antice rotundatd ; 
conveaiusculo, crenulato. 
tenuissime striatd, obsoleté decussatd ; margine ventrali 
Shell transversely oblong or wedge-shaped, inequilateral; posterior side the 
shorter, truncated, and obtusely pointed ; anterior rounded ; striated externally and 
somewhat obscurely decussated; ventral margin slightly convex and crenulated. 
Length, 1% inch. Height, 3ths of an inch. 
Locality. Mam. Crag, Bramerton. Recent, British Seas. 
This common living species I have seen only from the above locality, where I am 
informed it is by no means rare. 
2. Donax TRUNCULUs, Linneus. Tab. XXII, fig. 8, a, 4. 
DoNAX TRUNCULUS. 
— MTRUNCATA. 
CAPSA TRUNCULUS. 
Linn. Syst. Nat., ed. 12, p. 1127, 1767. 
Born. Test. Mus. Cees., p. 54, t. 4, figs. 3, 4, 1780. 
Poli. Test. Sicil., vol. ii, p. 76, t. 19, figs. 12—20, 1795. 
Savigny. Descr. de l’ Egypt, tom. xxii, p. 198, pl. 8, fig. 14. 
Phil. En. Moll. Sic., yol. i, p. 36; vol. ii, p. 28. 
Broce. Conch. Foss. Subappen., p. 535, 1814. 
Desh. Exped. Scient. Alger. Moll., pl. 74, figs. 1—5; and pl. 75. 
S. Wood. Catalogue, 1840. 
Hanley. Recent Shells, p. 87, pl. 11, fig. 38. 
SERRULA LHVIGATA. Chemn. Conch. Cab., vol. vi, p. 259, pl. 26, figs. 253, 254, 1782. 
Le caret? Adans. Nat. Hist. Senegal, t. 18, fig. 2. 
Spec. Char. Testd transversd, cuneatd, levigatd, valdé inequilaterali ; latere postico 
brevissimo, truncato ; margine ventrali crenulato. 
